Trochanteric Nails for the Reduction of Intertrochanteric Fractures: A Biomechanical Analysis Based on Finite Element Analysis and DIC System

Abstract Purpose Intertrochanteric fractures are common among femoral in the elderly population. The trochanteric nail is a standard internal fixator used treating intertrochanteric fractures. technique of fracture reduction affects postoperative outcome. Here, we applied finite element analysis (FEA) to study mechanical effects different approaches using both stable and unstable Methods We combined FEA vitro experiments digital imaging correlation (DIC) alignment conditions after 4 cases system. A downward force 2250 N was head, distal end femur fixed. observed indicators were displacement, together with stress on In addition, displacement distribution analyzed DIC. Results case space reduction, transmitted by system, resulting greater imposed or closed much smaller. associated smaller contact area at site, trochanter Conclusion When system for fixation, site well aligned, reducing nail.